Shielding case and display device

Abstract

The utility model relates to a shielding case which comprises a box body structure with an opening at one end, and a limiting structure and a supporting structure which are used for fixing a circuit board are arranged in the box body structure. The limiting structure comprises elastic pieces at least arranged on the two opposite inner side walls of the box body structure, the elastic pieces sequentially comprise fixing parts, guiding parts and limiting parts in the direction away from the bottom of the box body structure, the limiting parts are perpendicular to the corresponding inner side walls, and the guiding parts and the limiting parts are obliquely arranged. One end of the guide part is connected with one end, far away from the corresponding inner side wall, of the limiting part, and the other end of the guide part is close to the corresponding inner side wall; the supporting structure comprises supporting plates at least arranged on the two opposite inner side walls of the box body structure, and the distance between the supporting faces of the supporting plates and the bottom of the box body structure is smaller than the distance between the limiting part and the bottom of the box body structure so that the circuit board can be fixed between the supporting plates and the limiting part. The utility model further relates to a display device.

Description

Technical Field

[0001] The utility model relates to the technical field of display product manufacturing, in particular to a shielding cover and a display device. Background Art

[0002] In current monitors, the motherboard and power board are fixed in the shielding cover with screws, and the shielding cover is supported by studs. The main advantage of this method is the simple structure and high stability. However, this method has the following disadvantages:

[0003] The length and size of rivets in each project are different, and there are many types of rivets, which are easy to mix; the rivets are relatively long and easy to tilt, and the positioning accuracy is not high, which is not suitable for automated operations; there are many parts, and assembly is time-consuming, and the cost of parts and assembly is relatively high. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a shielding cover and a display device, which solve the problem of low efficiency in assembling the shielding cover and the circuit board by fixing with screws.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in the embodiment of the utility model is: a shielding cover, comprising a box structure with an opening at one end, wherein a limiting structure and a supporting structure for fixing a circuit board are arranged in the box structure;

[0006] The limiting structure includes at least two spring pieces arranged on the two opposite inner side walls of the box structure, and along the direction away from the bottom of the box structure, the spring piece includes a fixing portion, a guiding portion and a limiting portion in sequence, the limiting portion is arranged perpendicular to the corresponding inner side wall, the guiding portion is arranged obliquely with the limiting portion, and one end of the guiding portion is connected to one end of the limiting portion away from the corresponding inner side wall, and the other end of the guiding portion is arranged close to the corresponding inner side wall;

[0007] The support structure includes at least a support plate arranged on two opposite inner side walls of the box body structure, and the distance between the support surface of the support plate and the bottom of the box body structure is smaller than the distance between the limiting portion and the bottom of the box body structure, so as to fix the circuit board between the support plate and the limiting portion.

[0008] Optionally, the fixing portion is parallel to the corresponding inner side wall, and one end of the fixing portion close to the bottom of the box structure is fixed to the corresponding inner side wall.

[0009] Optionally, the fixing portion, the limiting portion and the guiding portion are an integral structure, the limiting portion is formed by bending one end of the fixing portion away from the bottom of the box body structure toward a direction away from the corresponding inner wall, and the guiding portion is formed by bending one end of the limiting portion away from the fixing portion in the opposite direction.

[0010] Optionally, a first groove is provided on the inner side wall, the first groove is formed by a portion of the inner side wall being recessed in a direction away from the center of the box body structure, and the elastic sheet is disposed in the first groove.

[0011] Optionally, part of the first groove is recessed in a direction away from the center of the box structure to form a second groove, and the orthographic projections of the limiting portion and the guiding portion on the corresponding inner side wall are located in the second groove.

[0012] Optionally, the support plate is in a U-shaped structure, and an opening of the support plate is arranged toward the corresponding inner side wall.

[0013] Optionally, a protrusion is provided on the side of the support plate away from the bottom of the box structure to position the circuit board.

[0014] Optionally, the support plate is formed by a portion of the inner side wall being recessed toward a direction close to the center of the box structure.

[0015] An embodiment of the utility model further provides a display device, comprising a display module, a housing and the above-mentioned shielding cover, wherein the shielding cover is located between the display module and the housing.

[0016] The beneficial effect of the utility model is that the supporting structure and the limiting structure cooperate to fix the circuit board between the supporting structure and the limiting structure. When the circuit board is assembled, the circuit board is inserted into the box structure from the opening of the box structure toward the bottom of the box structure, and the guide portion is configured to be deformable under force so that the circuit board moves between the limiting portion and the supporting structure. Compared with the screw locking method, the number of assembly parts is reduced and the assembly efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram showing a shielding cover in the related art;

[0018] Figure 2 A partial schematic diagram showing a shielding cover in the related art;

[0019] Figure 3 A schematic diagram showing the assembly state of a shielding cover and a circuit board in the related art;

[0020] Figure 4 A schematic diagram showing a shielding cover in an embodiment of the utility model;

[0021] Figure 5 A partial schematic diagram showing a shielding cover in an embodiment of the utility model;

[0022] Figure 6 A partial schematic diagram showing a shielding cover in an embodiment of the utility model;

[0023] Figure 7 A partial schematic diagram showing a shielding cover in an embodiment of the utility model;

[0024] Figure 8 A partial schematic diagram showing a shielding cover in an embodiment of the utility model;

[0025] Fig. 9 A partial schematic diagram showing a shielding cover in an embodiment of the utility model;

[0026] Fig.10 A schematic diagram showing the assembly state of the shielding cover and the circuit board in an embodiment of the utility model. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0028] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate that there is at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Figure 1 is a schematic diagram of a shielding cover in the related art, Figure 2is a partial schematic diagram of a shielding cover in the related art, Figure 3 It is a schematic diagram of the assembly pile of the shielding cover and the circuit board in the related art.

[0030] In the related art, the shielding cover 1 and the circuit board 100 are connected by screws 12 or rivets. The shielding cover 1 is provided with studs 11 to serve as a transfer support. However, there are many types of rivets with different lengths and sizes, which are easy to mix. The rivets are relatively long and easy to tilt. The positioning accuracy is not high and they are not suitable for automated operations. There are many parts and the assembly is time-consuming. In addition, the cost of parts and assembly is relatively high.

[0031] refer to Figure 4-Figure 10 In view of the above problems, an embodiment of the utility model provides a shielding cover, including a box structure 2 with an opening at one end, wherein a limiting structure 21 and a supporting structure 22 for fixing a circuit board 100 are arranged in the box structure 2;

[0032] The limiting structure 21 includes at least two spring pieces arranged on the two opposite inner side walls 201 of the box structure 2. Along the direction away from the bottom 203 of the box structure 2, the spring piece includes a fixing portion 211, a guiding portion 213 and a limiting portion 212 in sequence. The limiting portion 212 is arranged perpendicular to the corresponding inner side wall 201. The guiding portion 213 is arranged obliquely with the limiting portion 212. One end of the guiding portion 213 is connected to one end of the limiting portion 212 away from the corresponding inner side wall 201, and the other end of the guiding portion 213 is arranged close to the corresponding inner side wall 201.

[0033] The support structure 22 includes a support plate at least arranged on two opposite inner walls 201 of the box body structure 2, and the distance between the support surface of the support plate and the bottom 203 of the box body structure 2 is smaller than the distance between the limiting portion 212 and the bottom 203 of the box body structure 2, so as to fix the circuit board 100 between the support plate and the limiting portion 212.

[0034] Along the direction away from the bottom 203 of the box structure 2, the spring piece includes a fixing portion 211, a guiding portion 213 and a limiting portion 212 in sequence. That is, along the direction away from the bottom 203 of the box structure 2, the spring piece includes a fixed end and a free end, the fixed end is provided with the fixing portion 211, the free end is provided with the guiding portion 213, the guiding portion 213 is inclined to the limiting portion 212, and the guiding portion 213 is inclined to the corresponding inner side wall 201. When assembling the circuit board 100, the circuit board 100 is moved from the opening of the box structure 2. The guide portion 213 is located on the moving path of the circuit board 100, so that the guide portion 213 is deformed by force or the guide portion 213 is moved toward the corresponding inner side wall 201 by force, so that the circuit board 100 smoothly moves toward the bottom 203 of the box body and moves between the limiting portion 212 and the support plate. The guide portion 213 automatically rebounds and cooperates with the limiting portion 212 and the support plate to fix the circuit board 100. That is, relative to Figure 1-Figure 3 The shielding cover in the related art, the shielding cover provided in this embodiment fixes the circuit board 100 through the structure of the shielding cover itself, without setting additional assembly parts, the assembly is simple and efficient, and the assembly cost is reduced.

[0035] It should be noted that the number of the spring pieces on each inner wall 201 can be set according to actual needs and is not limited here.

[0036] Exemplarily, the spring may be a metal spring.

[0037] For example, the number and location of the limiting structures 21 and the supporting structures 22 can be set according to actual needs. Figure 4 and 10 In the box structure, the box body structure is a rectangular structure, and four of the limiting structures 21 are arranged on the two first inner side walls with a longer length, and two of the supporting structures 22 are arranged on each of the first inner side walls ( Figure 4 and Fig.10Two circuit boards 100 are arranged in the shielding cover, and the supporting structure 22 on the first inner side wall corresponds to supporting the corresponding circuit board), two supporting structures 22 are arranged on the two second inner side walls with shorter lengths, and the supporting structures 22 are arranged at both ends of each second inner side wall in its extension direction, and the limiting structures 21 are respectively arranged at both ends of each first inner side wall in its extension direction, and the limiting structures 21 and the supporting structures 22 on the first inner side wall are spaced and arranged adjacent to each other (the distance between the limiting structures and the supporting structures is less than a preset range) so that the supporting structures 22 and the limiting structures 21 can cooperate with each other to improve the connection stability of the circuit board 100.

[0038] In an exemplary embodiment, the fixing portion 211 is parallel to the corresponding inner side wall 201 , and one end of the fixing portion 211 close to the bottom 203 of the box structure 2 is fixed to the corresponding inner side wall 201 .

[0039] The fixing portion 211 can fix the spring sheet to the corresponding inner wall 201 by screwing. One end of the fixing portion 211 close to the bottom 203 of the box structure 2 is fixed to the corresponding inner wall 201, providing a larger space for the force deformation of the guide portion 213 of the spring sheet, which is beneficial to the assembly of the circuit board 100.

[0040] In an exemplary embodiment, the fixing portion 211, the limiting portion 212 and the guiding portion 213 are an integral structure, that is, the spring sheet is an integral structure, the limiting portion 212 is formed by bending one end of the fixing portion 211 away from the bottom 203 of the box body structure 2 in a direction away from the corresponding inner wall 201, and the guiding portion 213 is formed by bending one end of the limiting portion 212 away from the fixing portion 211 in the reverse direction, that is, one end of the fixing portion 211 extends outward and bends to form the limiting portion 212, and then extends outward again and bends in the reverse direction to form the guiding portion 213.

[0041] In an exemplary embodiment, a first groove 2001 is disposed on the inner side wall 201 . The first groove 2001 is formed by a portion of the inner side wall 201 being recessed in a direction away from the center of the box structure 2 . The elastic sheet is disposed in the first groove 2001 .

[0042] The setting of the first groove 2001 enables a shielding chamber to be formed between the shielding cover and the circuit board 100 after the shielding cover is assembled with the circuit board 100, thereby effectively blocking the external electric field, protecting the functional elements in the shielding chamber, and protecting the safety of the components on the circuit board 100.

[0043] In an exemplary embodiment, part of the first groove 2001 is recessed in a direction away from the center of the box structure 2 to form a second groove 2002 , and the orthographic projections of the limiting portion 212 and the guiding portion 213 on the corresponding inner wall 201 are located in the second groove 2002 .

[0044] The second groove 2002 is provided to provide space for the guide portion 213 to deform under force.

[0045] In an exemplary embodiment, the support plate is in a U-shaped structure, and the opening of the support plate is arranged toward the corresponding inner side wall 201 .

[0046] The side surface of the support plate away from the box structure 2 forms a support surface for supporting the circuit board 100 .

[0047] In an exemplary embodiment, the support plate is formed by a portion of the inner side wall 201 being recessed toward a direction close to the center of the box structure 2 .

[0048] In order to facilitate forming, the support plate is formed by opening two spaced apart and flat openings on the inner side wall 201, and then stretching the area between the two openings toward the inner center of the box structure 2 to form the support plate.

[0049] By adopting the above solution, the support plate is formed by utilizing the stamping and stretching characteristics of the shielding cover itself, thereby reducing the number of assembled parts.

[0050] In an exemplary embodiment, a protrusion 23 is provided on the side of the support plate away from the bottom 203 of the box structure 2 to position the circuit board 100 .

[0051] A groove or a through groove may be provided on the circuit board 100 for the protrusion 23 to be inserted into, thereby achieving the positioning of the circuit board 100 and improving the connection stability between the shielding cover and the circuit board 100 .

[0052] Exemplarily, the protrusion 23 is formed integrally with the support plate, that is, is formed by recessing a portion of the inner side wall 201 .

[0053] It should be noted that the number of the circuit boards 100 that can be assembled with the shielding cover can be set according to actual needs and is not limited here. The shielding cover can be assembled with one circuit board 100 or multiple circuit boards 100.

[0054] In summary, the shielding cover provided in this embodiment uses spring sheets to form buckles, and uses the stamping and stretching characteristics of the shielding cover itself to achieve positioning and support, which meets the standardization of parts and meets the convenience of eliminating screws to fix the board to meet the automation needs of the whole machine. It eliminates the studs and screws of the shielding cover, meets the requirements of fewer parts and less assembly time, and achieves the effect of reducing costs and enhancing the overall product competitiveness of the display.

[0055] An embodiment of the utility model further provides a display device, comprising a display module, a housing and the above-mentioned shielding cover, wherein the shielding cover is located between the display module and the housing.

[0056] Exemplarily, the circuit board 100 assembled with the shielding cover may be a main board and / or a power board.

[0057] The mainboard is located at the backlight side of the display module, and the mainboard is connected to the display panel of the display module to transmit signals to the display panel.

[0058] Exemplarily, the display module includes a back plate, and a flange 202 is provided around the opening of the shielding cover. The flange 202 is provided with a mounting hole for connecting with the back plate.

[0059] The display device may be any product or component with a display function, such as an LCD TV, an LCD monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device further includes a flexible circuit board 100, a printed circuit board 100 and a backplane.

[0060] There are a few points to note:

[0061] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.

[0062] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions is exaggerated or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or there may be intermediate elements.

[0063] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0064] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A shielding cover, characterized in that: It comprises a box structure with an opening at one end, wherein a limiting structure and a supporting structure for fixing a circuit board are arranged in the box structure; The limiting structure includes at least two spring pieces arranged on the two opposite inner side walls of the box structure, and along the direction away from the bottom of the box structure, the spring piece includes a fixing portion, a guiding portion and a limiting portion in sequence, the limiting portion is arranged perpendicular to the corresponding inner side wall, the guiding portion is arranged obliquely with the limiting portion, and one end of the guiding portion is connected to one end of the limiting portion away from the corresponding inner side wall, and the other end of the guiding portion is arranged close to the corresponding inner side wall; The support structure includes at least a support plate arranged on two opposite inner side walls of the box body structure, and the distance between the support surface of the support plate and the bottom of the box body structure is smaller than the distance between the limiting portion and the bottom of the box body structure, so as to fix the circuit board between the support plate and the limiting portion.

2. The shielding cover according to claim 1, characterized in that: The fixing portion is parallel to the corresponding inner side wall, and one end of the fixing portion close to the bottom of the box structure is fixed on the corresponding inner side wall.

3. The shielding cover according to claim 1, characterized in that: The fixing part, the limiting part and the guiding part are an integrated structure, the limiting part is formed by bending one end of the fixing part away from the bottom of the box structure in a direction away from the corresponding inner wall, and the guiding part is formed by bending one end of the limiting part away from the fixing part in the opposite direction.

4. The shielding cover according to claim 1, characterized in that: The inner side wall is provided with a first groove, the first groove is formed by a portion of the inner side wall being recessed in a direction away from the center of the box structure, and the elastic sheet is arranged in the first groove.

5. The shielding cover according to claim 4, characterized in that: Part of the first groove is recessed in a direction away from the center of the box structure to form a second groove, and the orthographic projections of the limiting portion and the guiding portion on the corresponding inner side wall are located in the second groove.

6. The shielding cover according to claim 1, characterized in that: The support plate is in a U-shaped structure, and the opening of the support plate is arranged toward the corresponding inner side wall.

7. The shielding cover according to claim 6, characterized in that: A protrusion is provided on the side of the support plate away from the bottom of the box structure to position the circuit board.

8. The shielding cover according to claim 6, characterized in that: The support plate is formed by a portion of the inner side wall being recessed toward a direction close to the center of the box structure.

9. A display device, characterized in that: It comprises a display module, a shell and the shielding cover according to any one of claims 1 to 8, wherein the shielding cover is located between the display module and the shell.

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